The diversions were almost certainly for this reason. Crew scheduling, weight and balance, passenger manifests, flight plan filing with ATC for IFR, etc are all handled before takeoff, once it's in the air there's not much ground systems involvement required. But if all gates are occupied with outage impacted planes and space is tight or non-existent to stick more birds on location, have to drop it somewhere with room for dead birds. Could have also dropped it in a location with more anticipated crew availability when ops resumes, however much less likely given the outage ops likely didn't have a handle on that info or the ability to be planning ahead like that.
